The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM SYSTEM 9-18mm f4.0-5.6 II and the Olympus ED 8-25mm F4 Pro for their suitability to various photography scenarios:
Size and Weight Comparison The size of a lens is a crucial factor to consider when comparing two lenses. Olympus ED 8-25mm F4 Pro is the longer of the two lenses at 89mm. The OM SYSTEM 9-18mm f4.0-5.6 II with a length of 49mm, is 40mm shorter. Besides being longer, the Olympus ED 8-25mm F4 Pro also has a larger diameter of 77mm compared to the OM SYSTEM 9-18mm f4.0-5.6 II's 56mm diameter.
Below you can find a scaled side-by-side image of OM SYSTEM 9-18mm f4.0-5.6 II and Olympus ED 8-25mm F4 Pro to get a better idea of how their sizes compare in real life.
Comparison image of the OM SYSTEM 9-18mm f4.0-5.6 II and the Olympus ED 8-25mm F4 Pro Size and Weight The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. OM SYSTEM 9-18mm f4.0-5.6 II weighs 154g, which means it is 257g (62%) lighter than the Olympus ED 8-25mm F4 Pro which has a weight of 411g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Micro Four Thirds Mount for size comparison purposes.
Ultra-Wideangle Micro Four Thirds Mount
Filter Threads
The OM SYSTEM 9-18mm f4.0-5.6 II has a filter size of 52mm whereas the Olympus ED 8-25mm F4 Pro has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the OM SYSTEM 9-18mm f4.0-5.6 II:
And these are the 72mm filters that we recommend for the Olympus ED 8-25mm F4 Pro:
Lens Mounts
Both the OM SYSTEM 9-18mm f4.0-5.6 II and the Olympus ED 8-25mm F4 Pro has the same Micro Four Thirds lens mount . Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 .
Focal Range
OM SYSTEM 9-18mm f4.0-5.6 II has a focal range of 9-18mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
18-36mm when used on a FourThirds format camera.
On the other hand, the Olympus ED 8-25mm F4 Pro has a focal range of 8-25mm and 3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16-50mm when used on a FourThirds format camera.
